19799125 has 8 divisors (see below), whose sum is σ = 24709464. Its totient is φ = 15839200.

The previous prime is 19799123. The next prime is 19799137. The reversal of 19799125 is 52199791.

It can be written as a sum of positive squares in 4 ways, for example, as 236196 + 19562929 = 486^2 + 4423^2 .

It is not a de Polignac number, because 19799125 - 2¹ = 19799123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19799123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79072 + ... + 79321.

It is an arithmetic number, because the mean of its divisors is an integer number (3088683).

Almost surely, 2^19799125 is an apocalyptic number.

It is an amenable number.

19799125 is a deficient number, since it is larger than the sum of its proper divisors (4910339).

19799125 is an equidigital number, since it uses as much as digits as its factorization.

19799125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158408 (or 158398 counting only the distinct ones).

The product of its digits is 51030, while the sum is 43.

The square root of 19799125 is about 4449.6207703579. The cubic root of 19799125 is about 270.5299377031.

The spelling of 19799125 in words is "nineteen million, seven hundred ninety-nine thousand, one hundred twenty-five".